[Game] [Major] Frozen Terror Nocturne causing major FPS drop.

Description: Whenever Frozen Terror Nocturne appears on screen it causes my FPS to drop to 5-10 from the regular 40-60. This is rendering the game absolutely unplayable as long as he is on my screen. If he casts spells it makes the situation even worse.

Additional information:
-As far as I have observed this issue is limited to this one particular skin and I have never had this issue with his other skins or any other champ (Nor sure about Haunting Nocturne since I have not seen that skin recently).

-Also this problem persists on Live and I was pretty much forced to let my team 4v5 the entire game, not being able to move the moment Nocturne appeared on my screen.

-I play with all settings set to medium at 1600x900. My hovers at a constant 60 most of the times and the lowest I hit is 40 during team-fights.